Influence of pH on the structural and optical properties of ZnO nano rods prepared by dip coating technique

S Thambidurai, M Venkatachalam, M Saroja, P Gowthaman, S Shankar

Abstract


Zinc Oxide (ZnO) nano rods are grown on glass substrates with different pH (6.5, 7.5, & 9) seed layer. Zinc Oxide seed layer thin films were prepared by dip coating. Zinc nitrate hexahydrate was used as source of zinc ion, while hexamethylenetetramine solution served as the complexing agent. Synthesis of hexagonal shape zinc oxide nanorods were achieved by hydrothermal process. The prepared zinc oxide nano rods were characterized by X-ray diffraction, Scanning electron microscope, UV-Vis spectrophotometer and Photoluminescence.

From the XRD result all samples indicates that the ZnO nanorods arrays are preferentially well-oriented in the direction of the c-axis.  SEM images reveal that the change in the pH value from 6.5 to 9 leads to change in the size of nano rods grown on substrate.  The optical measurement shows that there is a change in the band gap of nano rod arrays with changing the pH of the starting solution.


Keywords


Zinc Oxide, pH, Hydrothermal growth, structural and optical properties.

References


F.E.Ghodsi and H.Absalan ACTA PHYSICA POLONICA A 118 (2010) 659-664.

Monika Gupta, Vidhika Sharma, Jaya Shrivastava, Anjana Solanlki, A.P.Singh, V.R.Satsangi, S.Dass, Rohit Shrivastava, Bull. Material science, 32 (2009) 23 – 30.

M.Suchea, S.Christoulakis, K.Moschovis, N.Katsarakis, G.Kiriakids, thin solid films 515 (2006) 551-554.

A.D.A. Buba, Ph.D., and J.S.A. Adelabu, Ph.D.

M.H.Habibi, M.Khaledi sardashti, Journal of the Iranian Chemical Society, 5 (2008) 603 – 609.

Mohammad M. Ali Journal of Basrah Researches (Sciences) Volume 37. Number 3 A/ 15 June (2011)

S.Ilican, Y.Caglar, M.Caglar, Journal of optoelectronics and advanced materials 10 (2008) 2578 – 2583.

U.Alver, A.Kudret, S.Kerli, Optoelectronics and Advanced Materials – Rapid Communications, 6 (2012) 107 – 109.

A.Sakthivelu, V.Saravanan, M.Anusuya and J.Joseph Prince., Journal of Ovonic Research Vol. 7, No. 1, January - February 2011, p. 1 - 7

J.Y.Li, X.L,Chen, H.Li, M.He, Z,Y,Qiao, journal of crystal growth 233 (2001) 5 – 7.

P.Gowthaman, M.Soroja, M.Venkatachalam, J.Deenathalayan, T.S.Senthil, Australian Journal of Basic and Applied Sciences 5 (2011) 1379 – 1382.

K Sivakumar, V Senthil kumar, N Muthukumarasamy, M Thambidurai, and T S Senthil, Bull. Mater. Sci., Vol. 35, No. 3, June 2012, pp. 327–331.

Lou Xiao-bo, Shen Hongplie, Zhang Hui, Li Bin-bin, Transactions of nonferrous metals society of China, 17 (2007) 814 – 817.

Nina V Kaneva, Georgi G Yordanov and Ceco D Dushkin, Bull. Mater. Sci., 33 (2010) 111-117.

V.Musat, A.M.rego, R.Monterio, E.Fortunato, Thin Films, 516 (2008) 1512.

K. Balachandra Kumar, P. Raji, Recent Research in Science and Technology, 3 (2011), 48-52.

Volodymyr Khranovskyy, Rositsa Yakimova, Fredrik Karlsson, Abdul S Syed, Per-Olof Holtz, Zelalem Nigussa Urgessa, Oluwatobi Samuel Oluwafemi and Johannes Reinhardt Botha, 2012, Physica. B, Condensed matter, (407), 10, 1538-1542.

Ziaul Raza Khan, Mohd Shoeb Khan, Mohammad Zulfequar, Mohd Shahid Khan, Materials Sciences and Applications, 2011, 2, 340-345

R.N.Gayen, R.Bhar, A.K.Pal, Indian Journal of Pure and Applied Physics, 48 (2010), 385 – 393.


Full Text: PDF

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

.......................................................................................................................................................................................................................

ISSN  2279 – 0381 |  IST HOMEJOURNAL HOME | Copyright IST 2012-13

.......................................................................................................................................................................................................................